EP 3055499 A4 20170719 - REGULATION OF FLOW THROUGH A WELL TOOL STRING
Title (en)
REGULATION OF FLOW THROUGH A WELL TOOL STRING
Title (de)
REGULIERUNG EINER STRÖMUNG DURCH EINEN BOHRLOCHSTRANG
Title (fr)
RÉGULATION D'ÉCOULEMENT À TRAVERS UN TRAIN D'OUTIL DE FORAGE
Publication
Application
Priority
US 2014018065 W 20140224
Abstract (en)
[origin: WO2015126428A1] A flow restriction tool can include a closure device having positions in which flow is permitted through the tool, in one position a flow passage is open to the flow and the closure device blocks flow through another flow passage, and in another position both passages are open to the flow, and a biasing device which displaces the closure device to the former position in response to a flow rate being less than a predetermined level. A well tool string can include an orientation tool that intermittently permits flow through a wall of the tool string to transmit orientation data via pressure pulses in a flow passage through the string, and a flow restriction tool that permits flow through one flow area when a flow rate of the flow is less than a predetermined level, and permits flow through a larger flow area when the flow rate is increased.
IPC 8 full level
E21B 33/14 (2006.01); E21B 34/08 (2006.01); E21B 34/10 (2006.01); E21B 47/18 (2012.01)
CPC (source: EP RU US)
E21B 33/14 (2013.01 - EP US); E21B 34/10 (2013.01 - EP RU US); E21B 34/102 (2013.01 - EP US); E21B 43/08 (2013.01 - US); E21B 43/12 (2013.01 - US); E21B 47/024 (2013.01 - US); E21B 47/095 (2020.05 - US); E21B 47/22 (2020.05 - EP RU US)
Citation (search report)
- [XY] US 2012181044 A1 20120719 - NIKIFORUK KEVIN JAMES [US]
- [X] WO 0106086 A1 20010125 - CHURCHILL ANDREW PHILIP [GB]
- [Y] US 5176220 A 19930105 - AKKERMAN NEIL H [US]
- [X] US 5609178 A 19970311 - HENNIG GREGORY E [GB], et al
- [A] WO 9947789 A1 19990923 - CHURCHILL ANDREW PHILIP [GB]
- [A] US 6176327 B1 20010123 - HEARN DAVID D [US]
- [A] US 2013133878 A1 20130530 - URBAN LARRY J [US], et al
- [A] US 3543793 A 19701201 - DOLLISON WILLIAM W
- See references of WO 2015126428A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2015126428 A1 20150827; AR 101540 A1 20161228; AU 2014383137 A1 20160519; AU 2014383137 B2 20170309; BR 112016014721 A2 20170808; CA 2932900 A1 20150827; CA 2932900 C 20190402; CN 105934560 A 20160907; CN 109025917 A 20181218; EP 3055499 A1 20160817; EP 3055499 A4 20170719; MX 2016006352 A 20161028; RU 2638999 C1 20171219; SG 11201605912P A 20160830; US 10316647 B2 20190611; US 2016356148 A1 20161208
DOCDB simple family (application)
US 2014018065 W 20140224; AR P150100499 A 20150220; AU 2014383137 A 20140224; BR 112016014721 A 20140224; CA 2932900 A 20140224; CN 201480063981 A 20140224; CN 201810939656 A 20140224; EP 14882845 A 20140224; MX 2016006352 A 20140224; RU 2016129823 A 20140224; SG 11201605912P A 20140224; US 201415113970 A 20140224